Nickel inhibits binding of alpha2-macroglobulin-methylamine to the low-density lipoprotein receptor-related protein/alpha2-macroglobulin receptor but not the alpha2-macroglobulin signaling receptor.

Published

Journal Article

A previous study demonstrated that activated alpha2-macroglobulin (alpha2M*) binding to the low-density receptor-related protein/alpha2-macroglobulin receptor (LRP/alpha2MR) is blocked by Ni2+ [Hussain, M. M., et al. (1995) Biochemistry 34, 16074-16081]. We now report that the effect of Ni2+ is on a region of the alpha2M molecule upstream of the carboxyl terminal receptor recognition domain. This observation is consistent with previous observations from this laboratory suggesting that alpha2M* binding to LRP/alpha2MR involves a region of the alpha2M molecule immediately upstream of the receptor recognition domain [Enghild, J. J., et al. (1989) Biochemistry 28, 1406-1412]. We further demonstrate that Ni2+ has no effect on the binding of alpha2M* or a cloned and expressed receptor binding fragment (RBF) to the recently described alpha2M signaling receptor as assessed by direct binding and signal transduction studies.

Full Text

Duke Authors

Cited Authors

  • Odom, AR; Misra, UK; Pizzo, SV

Published Date

  • October 14, 1997

Published In

Volume / Issue

  • 36 / 41

Start / End Page

  • 12395 - 12399

PubMed ID

  • 9376342

Pubmed Central ID

  • 9376342

International Standard Serial Number (ISSN)

  • 0006-2960

Digital Object Identifier (DOI)

  • 10.1021/bi970806k

Language

  • eng

Conference Location

  • United States